[1]} pointed out that the accretion disc size discrepancy could be solved if the luminosities of the AGNs had simply been underestimated. [2]} proposed that this was indeed the solution to the disc-size problem and that the luminosities of AGNs were being underestimated by an order of magnitude by neglecting internal reddening. We can quantitatively test this with NGC 5548. For NGC 5548, [3]} find the size of the accretion disc to be 2.5 times larger than predicted (see their section 4.1). This is similar to the typical size discrepancy in micro-lensed AGNs and other reverberation-mapped AGNs (see Figure 6 of [3]}).
